Kannan, Thank you for your quick response. Is it possible to get the rtobject handle into my main script? Or I have to work within route-proto.tcl to access the handle? Many thanks, Ian Liu At 10:09 AM 12/6/98 -0500, you wrote: >The rtObjects are created at run-time, i.e. when you issue >the $ns run command. This is documented in the nN&D. > > >Kannan > >